MERN Stack Developer

Looking for a 5+ years experienced Senior Full-stack Engineer (Backend Heavy) for a research-focused, product-based, US-based Startup.

AI Assistant for Research using state-of-the-art language models (AI Agent for Academic Research)

At SciSpace, we're using language models to automate and streamline research workflows from start to finish. And the best part? We're 

already making waves in the industry, with a whopping 5 million users 

on board as of November 2025! Our users love us too, with a 40% 

MOM retention rate and 10% of them using our app more than once 

a week! We're growing by more than 50% every month, all thanks to 

our awesome users spreading the word (see it yourself on Twitter). Andwith almost weekly feature launches since our inception, we're 

constantly pushing the boundaries of what's possible. Our team of 

experts in design, frontend, fullstack engineering, and machine learning

are already in place, but we're always on the lookout for new talent to help us take things to the next level. Our user base is super engaged and always eager to provide feedback, making Scispace one of the most advanced applications of language models out there.

We are looking for insatiably curious, always learning SDE 2 Fullstack Engineers. You could get a chance to work on the most important and challenging problems at scale.

Responsibilities:

* Work in managing products as part of SciSpace product suite.

* Partner with product owners in designing software that becomes part of researchers’ lives

* Model real-world scenarios into code that can build the SciSpace platform

* Test code that you write and continuously improve practices at SciSpace

* Arrive at technology decisions after extensive debates with other engineers

* Manage large projects from conceptualisation, all the way through deployments

* Evolve an ecosystem of tools and libraries that make it possible for SciSpace to provide reliable, always-on, performant services to our users

* Partner with other engineers in developing an architecture that is resilient to changes in product requirements and usage

* Work on the user-interface side and deliver a snappy, enjoyable experience to your users

Our Ideal Candidate would:

* Strong grasp of one high-level language like Python, JavaScript, etc.

* Strong grasp of front-end HTML/CSS, non-trivial browser-side JavaScript

* General awareness of SQL and database design concepts

* Solid understanding of testing fundamentals

* Strong communication skills

* Should have prior experience in managing and executing technology products.

Bonus:

* Prior experience working with high-volume, always-available web applications

* Experience in ElasticSearch.

* Experience in distributed systems.

* Experience working with a Start-up is a plus point.

Location: Mumbai

Experience Required: 2+ Years

Job Type: Full-Time

Notice Period: Immediate Joiners

About the Role

We are seeking a skilled and experienced Full Stack (MERN) Developer to join our product engineering team. The ideal candidate must have experience working in a product-based software development company and should have hands-on involvement in e-commerce platform projects.

Mandatory Criteria

• Candidate must be currently working or have prior experience in a product-based software development company
• Candidate must have worked on at least one e-commerce platform project (end-to-end involvement)

Key Responsibilities

• Develop and maintain scalable web applications using MongoDB, Express.js, React.js, and Node.js
• Translate UI/UX designs into high-quality front-end code
• Build and integrate RESTful APIs
• Ensure performance, quality, and responsiveness of applications
• Participate in design discussions, code reviews, and contribute to technical documentation
• Work in a collaborative, agile development environment

Required Skills

• Strong proficiency in JavaScript, React.js, Node.js, and Express.js
• Hands-on experience with MongoDB or other NoSQL databases
• Solid understanding of RESTful APIs and architectural patterns
• Knowledge of version control systems like Git
• Understanding of CI/CD and cloud-based deployment practices
• Good grasp of performance optimization, caching, and security practices

Requirements:

• Hands-on working knowledge and experience is required in:
• Extensive experience working on C#, . net and. net core frameworks
• Extensive experience working on React, Javascript and Typescript
• Relational Databases (SQL Server, Oracle, PostgreSQL, etc. )
• NoSQL Databases (Mongo, Cloud Spanner, etc. )
• Agile Methodologies (Scrum, TDD, BDD, etc. )
• Experience working with distributed teams across regions and time zones
• Strong organisational skills
• Display detailed, critical, quality-oriented, skeptical thinking about the product
• Experience with several of the following tools/technologies is desirable: GIT, Jira, Jenkins, SharePoint, Visual Studio Code.
• Microservices Architecture, Domain Driver Design, Test Driven Development is a bonus
• Design Patterns and implementing the Design Patterns
• Development of Complex Application and System Architectures
• Data Structures and Algorithms using Typescript, C# and. NET
• Experience working in Google Cloud will be a big bonus as all our systems are in the Cloud 7
• Knowledge of REST and gRPC API's is a bonus
• Knowledge of the following technologies is a plus:
• Continuous Integration and Continuous Delivery Tools like GitHub, Git, etc.
• Containerisation Technologies (Docker)

Responsibilities

• Responsible for end-to-end development (front-end to back-end) eb based applications
• Design and develop robust, scalable and highly efficient website
• Ensure the best possible performance, quality, and responsiveness of the application
• Identify and correct bottlenecks and fix bugs
• Help maintain code quality, organization, and automation

Skills

• Strong development experience in Java, JavaScript on Node.js
• Proficiency in full stack web application development (MEAN stack)
• Strong programming skills with experience in design, coding, and testing
• Proficiency with relational databases such as MySQL
• Good understanding of server-side CSS preprocessors (such as Sass, based on project requirements)
• Good experience with AJAX, REST and JSON
• Experience with AWS cloud services will be an added advantage
• Understanding of Source Control tools for version control: GIT/SVN

Requirements

• Bachelor degree in Computer Science, Engineering or a related subject
• 2 - 6 years of hands on experience developing, implementing and delivering web applications
• Excellent written and verbal communication skills 

• Extensive experience in building REST APIs
• Experience in building, managing, and enhancing backend / server-side development using java / java scripts. Expertise in NodeJS is preferred
• The person must have built systems that consume and process volumes of data from various sources. Experience in handling and managing data in NoSQL databases such as Mongodb.
• Extensive experience of building custom UI for web using the popular frameworks like angular and react. Experience in developing mobile UI is nice to have
• Experience of working with code repositories such as Github and GitLab.
• Fluent written and spoken English.
• Experience of working on Cloud environments and experience in AWS is preferred.
• Experience in Dockers and Kubernetes for deployments

Role & Responsibilities

• A Proven work experience as a Ruby on Rails developer with good understanding of Java script, jQuery, HTML, CSS. The individual will need to be hands on with development, performance optimisation, secure development process, usability, and coding standards of the product.
• Strong ROR development experience and follows best practices (test-driven development, continuous integration, SCRUM, refactoring, and code standards).
• Should have a mix of excellent reasoning ability to document, develop and test software with the commitment to excellence and defect free product before being deployed.
• Should be able to work closely with all stakeholders to investigate, fix, optimise, test, and deploy high quality solutions.
• Should have hands on understanding of technical design, implementation, and maintenance of technical initiatives towards improving and scaling of products.
• Self-motivated and should rapidly incorporate new requirements and deliver successfully by self.
• Effectively communicates with peers and stakeholders, gathers and clarify requirements from technical & functional aspect.

• Follows software development process; consistently innovates processes to improve individual and team productivity and quality.
• Strong Analytical, Problem Solving Skills and participates in all activities with urgency, should be result oriented and with strong work ethic.
• Experience with Agile development lifecycle with excellent understanding of feature estimation and ability to communicate issues and risks that may impact timelines or resources.

Desired Candidate Profile

• 4+ years of IT experience.
• At least 4 years commercial web development experience.
• At least 3 years of Ruby on Rails commercial development experience.
• Familiarity with Relational and Non Relation Databases ( Postgres, Mysql, MongoDb)
• REST API development.
• Familiarity with In Memory Database ( Redis, Memcache )
• Web development - HTML, HTML5 JavaScript, AJAX, CSS, jQuery, http, REST.
• AGILE/SCRUM development Experience.
• Development practices - Rails test framework / TDD / BDD, Domain Driven Design, SOLID, refactoring, OOP design patterns
• Expertise in version control system ( GIT )
• Candidate need to be comfortable dabbling with some basic infrastructure management on AWS.
• Familiarity with ( React, Vue ) is a plus.

Senior Full Stack Engineer

At Aurigin we are building the world's largest deal origination platform to match middle-market corporates seeking capital with the most relevant providers of capital anywhere in the world. We believe our team and technology can transcend the geographical borders and connect fund seekers anywhere in the world with investors looking to lend and invest in the market. We have done over 125K introductions and over $600Bn of transaction value introduction on our platform. 

Used by leading financial institutions across North America, Western Europe, APAC, Latam and MENA, we help capital reach far beyond the traditional boundaries of sectors, geographies, and personal networks. Aurigin connects specific opportunities with precision, efficiency, and intelligence. It is designed to streamline the location, promotion and analysis efforts of professionals involved in deal-making while maintaining complete confidentiality about its members.

At Aurigin we believe a strong team can deliver great products. We are looking for a senior engineer who can be part of our team and work in an agile development environment. As a senior engineer you would be responsible or leading a team of our developers to define and grow our core platform. You would be working with the product team to understand, design, and implement new features and extensions to our platform. You would be responsible for mentoring and guiding junior engineers.  We are looking for someone who has a sound understanding of fundamental design principles of software development. 

• 6-8 years of relevant software development experience
• Extensive experience of building and designing web applications 
• Experience with designing and architecting web applications with SPA framework on the frontend and service oriented framework on the backend.
• Proficiency in either one of front-end or backend technologies 
• Experience working in a scrum based agile team.

• Experience with Java or JVM based frameworks
• Experience with React library and ecosystem.
• Knowledge of vanilla JavaScript is a big plus.
• Past experience working in a start-up and/or fintech industry.